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Commit cac7ba91 authored by Daniel Rosenberg's avatar Daniel Rosenberg
Browse files

ANDROID: sdcardfs: Use filesystem specific hash 



We weren't accounting for FS specific hash functions,
causing us to miss negative dentries for any FS that
had one.

Similar to a patch from esdfs
commit 75bd25a9476d ("esdfs: support lower's own hash")

Signed-off-by: default avatarDaniel Rosenberg <drosen@google.com>
Change-Id: I32d1ba304d728e0ca2648cacfb4c2e441ae63608
parent 875e5267

fs/sdcardfs/lookup.c

+7 −2
Original line number Diff line number Diff line
@@ -366,8 +366,13 @@ static struct dentry *__sdcardfs_lookup(struct dentry *dentry, 
	/* instatiate a new negative dentry */

	dname.name = name->name;

	dname.len = name->len;

	dname.hash = full_name_hash(lower_dir_dentry, dname.name, dname.len);

	lower_dentry = d_lookup(lower_dir_dentry, &dname);



	/* See if the low-level filesystem might want

	 * to use its own hash

	 */

	lower_dentry = d_hash_and_lookup(lower_dir_dentry, &dname);

	if (IS_ERR(lower_dentry))

		return lower_dentry;

	if (lower_dentry)

		goto setup_lower;